DE1930468A1 - Device for wrapping bulky items or items stacked in groups - Google Patents

Description

BSSWSCHUH for the patent application of the company GARl DROHHAM GMBE, Stuttgart-Münster

concerning:

"Device for wrapping bulky items or groups stacked items *

The invention relates to a device for wrapping bulky or objects stacked in groups on pallets.

Jas is known for prefabricated sacks made of shrinkable film by hand over the objects. These sacks are then later shrunk onto the objects with the supply of heat However, this method of wrapping objects is of course only very poorly efficient.

It was therefore already proposed a wrapping device, consisting of a group of at least two parts that can be driven independently of one another and are arranged one behind the other

0 Q 9 8 5 2 /

set conveyor device, a feed device for an endless half-tube, one of these feed devices arranged downstream, above the first part of the conveyor device and the profile of the objects to be wrapped and. If necessary, downwardly open tunnel-like shoulder adapted from under these pallets for guiding and shaping the film over the sides of the objects extending parallel to the conveying direction of the conveyor device as well as a transverse welding and cutting device, its welding and cutting tools in the area between the first and second part the conveyor with. controllable force are movable against each other . '/ _' -_ '" ^: \ ■." ...: - -: ■ ""■' ■. '■'"■;*;; -.

The main disadvantage of such a device is that for different heights of the items to be packed Foil rolls with different widths kept in stock have to be »Replacing the film rolls during the transition from one kind of objects to another is time consuming and requires a corresponding downtime of the device · Furthermore, by means of the device mentioned, it is only possible at hohea technical effort possible »the semi-tubular film tightly around the γ j To place objects and thus to keep the foil consumption low! keep. ι

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To au avoid the night Elle mentioned, the invention is j based on a device for Uahüllen bulky or of] stacked to form groups of articles with shrinkable particular i heat Yerpackungsfolien, which © an input direction j zm conveying into and for temporarily Stillßötaen the Has objects in the device and its feed device for an endless tubular film, and can «aiohnet

0098 527 1181

1930488

see & νρςφ below ^ haXb, .- «U8p. imfUhr ^ inMe htung £ ü ^ $ in. © n e.nd.iQse, n, -TollfeO, * en ^ lpio ^ ang ^ <är4 & e / k§ Pe & egn & ttQl, wm front M & m M§ f © li ^ nieiil ^ bQi saw §T fee »on a Quej? Sehi & tt e ^ BSi ^ e * Ä8 _: the, §§ito§eM ^ Ge ^ n8t§n4e ^ uf the fS & ^ ixa & fotmß xm &% m animals of the §e.« Opened ^ Qiaiöiafcien ^ efi my v © i * wTO ^ w? e ^, J5aJ over di ^ against «

dem iO ^ ien ^ oia ^ u ^ o ^ erlmW de ^ objects

Further ^ ftodi? Ngj§merigB & l.e lietrefiea the Hstßsisitaiaen? that the conveyors put their conveyors in two conveyors and that the attachment of the Qvieyectowissnsiiit xmA for this separates "the l'Qliensolil & uiQiiea swAseben", whereby the front one reads the "conveyer from swei .jaueiö"& nde ^ in parallel suction . which in an aieü feefeaiotnter way a control valve is attached to a suction pump ^ lo ^ seii sirnd »or the. The conveying means grasping the front end of the hose are designed as all controlled, closing and opening grippers c. In accordance with the invention, the conveying means are attached to the mirror image of the center of the conveying device, guided in parallel planes, "controlled driven pairs of chains ₈ which run a short distance below the feed device and at a greater distance above the conveying device" and the side of the objects provided on the conveying device These chains are essentially arranged vertically and advantageously run downwards away from each other and then temporarily below the feed device, with the transverse welding and separating lines

009852/1181

facility located in this area is “Further Erf-indiaagsmerlGsale "concern the control of the device through. "certain buttons and precautionary means for the

In the device according to the invention, it is not necessary to use foil tubes with different dimensions when changing from one pallet size to another "However ßchlagenen apparatus BST igelängen at the pre""light and! fast Yorwählhar" Especially when the pollen tubes in flaehliegesaden condition called be / feenf en by Veraehieben electric button old, run "white ₉ who objects baggy" different A surrounding Envelopes have a pleasing appearance on their vertical sides,

An example of the device according to the invention is hereinafter referred to in more detail with the aid of schematic drawings

In the 2 verifications tend to:

r, I the erfindmigsgemäBse ITEuiüllvorrichtimg in part cut and broken front view, xmd

l ^? ig «2 the device according to Pig« 1 in plan view Ό

The UailiüllTorrichtung hesteht shown in ifesentlichen from a ZufüHareinrichtung 1 for an endless 2p the ülireinrichtung Zuf-in -flachgelegtea 2 uetaBd gusseted _t 3 "having" an under hall) of 1-ssigeo rdneten Paar'-of

0098 ' ^f > 2/1 11i 1 ^: ':; .. bath

Funding means 4g as well as one also arranged below the feed device 1. Qusrechweiß- and separating device 5 rand a Fördereistriehtung 6 sum controlled Su- vaaä Wegfordern of objects to be wrapped 7 ο

The feed line 1 in turn consists of two parallel suction rollers 8, 9 _{9 in} such a way that it can only be rotated in the intended conveying direction. with the help of two working cylinders 13 against the first Vorjaugswalse 8 and is preferably connected to this via gear wheels 14-15 ii * drive connection.

The conveying means 4 are designed as hollow bars which have suction openings 16 and are connected by means of hoses 17 via a control valve (not shown) to a pump (also not shown) attached .. the strips 4 are secured to the paired Kettcai 19 »20, which is driven by sprockets 2I ₉ 22 and of further sprockets 23? 24 so ge ·» aind iiäirt ₀ that die.Leisten 4 is a oraugswalsan au the ¥ 8 _S 9 parallel © position, in their upper starting position below the Voraugsvialae 8 initially a short distance from each other and when the chains Ϊ9, 20 in parallel planes and in the lörderoinn of the Voraugsvialae 8, 9 from - © inaader to öäjxeia distance ₉ of is greater than the entire width of the enveloping object © I ₉ .

BAD Often / <3 years _NAL

00985 271181 "

1930Λ68

then in addition to the latter lower "Di © sprockets 21 and 22 are on the shaft 10 or a _o au even far fastened these parallel shaft 25th The shafts 10, 25 are in drive connection via gearwheels 26 »27 that are in engagement with one another and are in turn driven in alternating rotation via a gear 28 by a motor 29 with an attached brake 30»

The transverse welding and separating device 5 essentially consists from awei to the. Prefeed rollers 8, 9 parallel bars 31 * 32, which can be displaced relative to one another by means of straight guides 33, 34 are stored and trained in a manner known per se Welding bars 35 as well as welding arranged above them " tools 36, 37 have a type known per se *

The wrapping of objects 7, which are normally stacked on pallets 38, is provided in the manner described below. '.. ■■, -, ■; V-. :

Zv enveloping objects 7 are conveyed by means of the device 6 under the feeder J and this stiligesetat in alignment.

The film tube 2, which comes from a supply (not shown), is passed between the feed rollers 8 _P 9 and ends at the level of the transverse welding and separating device 5, is sucked onto the strips 4 and opens aa its front bath 2a according to the distance of the Bars 4 »During this process, the bars 31» 32 are stripped of each other. FacMem the front © bath 2a is sucked to the strips 4, wlM the Kupplußg 11 actuated, the brake 3Q released mod

0098 52 / 118t "■; .-. ■ ^: ■■■■ ■" ■. ■ ■

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the motor 29 is switched on. "As a result, film tube 2 is fetched from the supply by means of the feed rollers Q _$ 9 ^ the front end 2a of which is increasingly opened wider by means of the strips 4 during their conveying movement and is finally pulled over the objects 7"

When lowering, one of the two bars 4 or a rabbit (not shown) attached to a chain actuates an electric aster 39, which is arranged in a height-adjustable manner on a support rail 40. The motor 29 is switched off and braked by the button 39 29 has come to a standstill, two working cylinders 41 move the bars 31 _s 32 of the transverse welding and separating device 5 against each other via levers 42, 43 and push rods 44 and the film tube 2 is provided with a transverse weld seam and cut through above this.,

After cutting through, the bars 31 »32 of the device 5 are moved back into their original stables and the motor 29 is switched on again. When this is switched on again, the clutch 11 is not actuated; so that only the strips 4 move and "pull the loop piece 2b cut off from the film tube 2 and cross-locked at its upper end over the objects 7", another second button 45 arranged on the holding rail 40 below the first button 39 interrupts the suction on the strips 4, switches the motor 29 in the opposite direction so that the strips 4 return to their upper starting position, and switches on the conveyor 6 so that the wrapped objects 7 have been conveyed away

0098 52/1101

The fact that the cross-closed raid-cut tube piece 2b is pulled completely over the objects 7 by means of the strips 4 ensures that no more length of the film tube 2 is used than is necessary and that, if necessary, subsequently in a known per se Way made insulting the educated in this way. Wrapping on the objects 7 and the pallet 38. Material for the foil tube. 2 with me proportionally. ringer shrinkability required lst _e Especially - advantageously wrapping Xn is the manner described above * ren at a low total height of the resting on the pallet 38 Objects Tj to -a smooth pulling the severed hose on the OBE = leil the geetapeltezi objects 7 to reaching

What if the objects 7 resting on the pallet 38 have a great overall height and thus come close to the transverse welding and separating device 5 _? d & zm. also cheered on - that ?; The aforementioned further lowering of the strips 4 after the transversely welded hose section 2b has been cut off. In this case / the first button 39 would already lift the |. The suction force and the return of the strips 4 trigger ₉ so that the hose piece 2b would then slide down along the objects 7 due to its own weight and smooth out above the latter _a

An above the QLierschweiiS "and separator 5 provided additional push-button 46 switches the motor 29 off again _B tfenn the strips 4 to the end 2a of from. the door pulling roller 8j 9 aiäs-nach imtöii hanging iOlienschlauch 2 have approached c As soon as the next loaded pallet 38 ^ u of the Kuführeinriehtimg 1 is aligned by means of the conveyor 6

009852/1111

-BADOBK3INAL

t t f

the next wrapping process was initiated

The free wheel 12 prevents ₉ characterized in that the film tube 2 isird by a web tension regulator of a optionally be provided pre unwinding device 47 between the Yoraugswalzen 8 ₉ 9 withdrawn therethrough and characterized by the surüekgekehrten in its upper Atisgangslage strips 4 not during the times when the clutch 11 is not switched on more can be recorded _o

In order before starting the transferring device introducing the drawn off from a supply film tube 2 awisehen the preferential rolling relatively high level located above dor conveyor 6 8 * facilitate 9 can be attached 48 to the chains 19 a au the Voraugswalzen 8, 9 aligned in parallel rod _o An the beginning 2a of a new film tube 2 is attached to this rod 48 and then moved by means of the motor 29 and the chains 19 past a first deflection roller 49 around a wide deflection roller 50 in the direction of the feed rollers Q ₉ 9. While the upper preferred orphan 9 is lifted up * the rod 48 is guided around the lower pre-suction roller 8 and finally below the cross-welding and separating device 5, the two preferred rollers S ₉ 9 are pressed against each other, the film tube 2 from the

Rod dissolved 48 and the latter are übqr the Qusrschweiß- and separating device 5 angehoböiio The beam 31 "32 by means of the chains 19 is then clamped against each other, so that the film tube 2 schematically them retained and can be cut at the same time at its Anfaag" Kwrz then warden the preferential " »8 _S% ■ vaaß brought to distance feiarässaitiß again. die 48 'a ^ Isöliea iJaimn ivlnäxweh nnä mn üle UmI ankwa3.fie 50'

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led back around

Below the preferred orphan 8, two guide rollers 51 may be provided so that the front bath of lOlienschlauehes 2 with safety 2a has a vorbestimmto position when the strips 4 suck the same and öf f NEN _o To -this guide rollers 51 is not introducing a new Folienachlaucha 2 hinder _{9 they} are mounted at the free ends of levers 52 pivotable about axes 53

Instead of strips 4 with suction openings 16 could easily grippers designed in a known manner, which close in a controlled manner and apparently are used »

In a further embodiment of the device according to the invention, the upper initial position of the strips can be located below the cross-tail and separation device 5 and, after the latter has been actuated, the film tube 2 can be pre-weighed by the feed rollers 8, 9 by a predetermined distance so that the front end of the tube 2a can be grasped by the strips 4 _o

gat entanaprtioha s

009062/1181

Claims (1)

Patent address; 1 ο Device for wrapping bulky objects or objects stacked in groups »with packaging films that can be self-sealing, especially with the supply of heat, which has a device for conveying into and temporarily stopping the objects in the device for an endless tube of film, identified by below The feeder (1) for an endless solid film tube (2) arranged conveying means for gripping the front end (2a) of the film tube © (2) to open this end (2a) on a cross-section larger than the vertical projection of the objects ( 7) on the conveyor (6) land for pulling the open hose end (2a) by a preselectable amount over the objects (7) * and through a transverse welding and separating device (5) downstream of the feed device (t) for attaching a Cross weld seam on the film tube (2) .above the objects (7) and for cutting through the tube above outside this transverse weld _o 2a device according to claim 1 "characterized by a control of the conveying means (4) for a conveying path in two conveying steps, wheel of the cross-sleeper and separating device (5) for the application of the cross-weld seam and the severing of the film tube (2) between these two conveying carriages" 3o device according to claims 1 and 2 ₉ characterized in that the the front hose end (2a) detecteuden conveying means consist of awei parallel strips (4) with suction openings (16), which in a known manner via a control valve are connected to a suction pump * 009852/1181 4ο device according to claims 1 and 2, characterized, that the gek'ennzeichnet _8, the front hose end (2a) detecting conveying means are designed as a controlled closing and openable gripper " 5 ο Torrichtung according to any one of claims 1 "in to 4» characterized in that the conveyor disposed at a mirror image to the center of the conveyor (6), guided in parallel planes controlled ₈ driven pairs are attached by chains (19 * 20) _8, the low At a distance below the feed device (1) and at a greater distance above the conveyor (6), and the side of the objects (7) provided on the conveyor (6) essentially vertically arranged bandages. " _f Device according to one of Claims 1 to 5, characterized in that the chains (19 »20) within the Z \ iführeinriehtung (1) first run downwards away from each other and then temporarily towards each other, and that the transverse welding and cutting device ( 5) arranged in this area eats _o 7o device according to one of the claims 1 to 6, thereby characterized j that along the conveying path of the conveying means more available from them after completing a funding step, the suspension of the funding and the operation the transverse welding and separating device -. "(5) triggering adjustable Button (39) is arranged 8. Device according to one of claims 1 to 7, characterized marked j that the release button (39) is followed by another a second funding step of the funding through the same Ö0 98 52/1181 BATHROOM 0RK3SNAL "actuatable, the termination τοη controlling their conveyance, adjustable iaster (45) is arranged ", Device according to one of Claims 1 to 8, characterized in that on the pair of chains (19, 20) a feed roller (8) parallel to the feed roller (8) and starting from a pre-unwinding device (27) passes between the feed rollers (8, 9) and at least up to Querschsreiß "and separating means (5) towards movable rod (48) is arranged for the supply of the hose end (2a) in dl © device ₀ PATENT LAWYERS "W 1.-JG. H. FINCICE, DIPL-ING. H. ΒΟΗ » DlPL-ING. S. STAEGEB 009852/1181